cpython/Lib/test/test_smtpnet.py at 00355850a65c90be786e2f56aca6e8134194f7b5 · nmartensen/cpython · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
import unittest
from test import support
from test.support import import_helper
from test.support import socket_helper
import os
import smtplib
import socket

ssl = import_helper.import_module("ssl")

support.requires("network")

SMTP_TEST_SERVER = os.getenv('CPYTHON_TEST_SMTP_SERVER', 'smtp.gmail.com')

def check_ssl_verifiy(host, port):
    context = ssl.create_default_context()
    with socket.create_connection((host, port)) as sock:
        try:
            sock = context.wrap_socket(sock, server_hostname=host)
        except Exception:
            return False
        else:
            sock.close()
            return True


class SmtpTest(unittest.TestCase):
    testServer = SMTP_TEST_SERVER
    remotePort = 587

    def test_connect_starttls(self):
        support.get_attribute(smtplib, 'SMTP_SSL')
        context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
        context.check_hostname = False
        context.verify_mode = ssl.CERT_NONE
        with socket_helper.transient_internet(self.testServer):
            server = smtplib.SMTP(self.testServer, self.remotePort)
            try:
                server.starttls(context=context)
            except smtplib.SMTPException as e:
                if e.args[0] == 'STARTTLS extension not supported by server.':
                    unittest.skip(e.args[0])
                else:
                    raise
            server.ehlo()
            server.quit()

    def test_connect_host_port_starttls(self):
        support.get_attribute(smtplib, 'SMTP_SSL')
        context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
        context.check_hostname = False
        context.verify_mode = ssl.CERT_NONE
        with socket_helper.transient_internet(self.testServer):
            server = smtplib.SMTP(f'{self.testServer}:{self.remotePort}')
            try:
                server.starttls(context=context)
            except smtplib.SMTPException as e:
                if e.args[0] == 'STARTTLS extension not supported by server.':
                    unittest.skip(e.args[0])
                else:
                    raise
            server.ehlo()
            server.quit()

    def test_explicit_connect_starttls(self):
        support.get_attribute(smtplib, 'SMTP_SSL')
        context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
        context.check_hostname = False
        context.verify_mode = ssl.CERT_NONE
        with socket_helper.transient_internet(self.testServer):
            server = smtplib.SMTP()
            server.connect(self.testServer, self.remotePort)
            try:
                server.starttls(context=context)
            except smtplib.SMTPException as e:
                if e.args[0] == 'STARTTLS extension not supported by server.':
                    unittest.skip(e.args[0])
                else:
                    raise
            server.ehlo()
            server.quit()

    def test_explicit_connect_host_port_starttls(self):
        support.get_attribute(smtplib, 'SMTP_SSL')
        context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
        context.check_hostname = False
        context.verify_mode = ssl.CERT_NONE
        with socket_helper.transient_internet(self.testServer):
            server = smtplib.SMTP()
            server.connect(f'{self.testServer}:{self.remotePort}')
            try:
                server.starttls(context=context)
            except smtplib.SMTPException as e:
                if e.args[0] == 'STARTTLS extension not supported by server.':
                    unittest.skip(e.args[0])
                else:
                    raise
            server.ehlo()
            server.quit()


class SmtpSSLTest(unittest.TestCase):
    testServer = SMTP_TEST_SERVER
    remotePort = 465

    def test_connect(self):
        support.get_attribute(smtplib, 'SMTP_SSL')
        with socket_helper.transient_internet(self.testServer):
            server = smtplib.SMTP_SSL(self.testServer, self.remotePort)
            server.ehlo()
            server.quit()

    def test_connect_default_port(self):
        support.get_attribute(smtplib, 'SMTP_SSL')
        with socket_helper.transient_internet(self.testServer):
            server = smtplib.SMTP_SSL(self.testServer)
            server.ehlo()
            server.quit()

    @support.requires_resource('walltime')
    def test_connect_using_sslcontext(self):
        context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
        context.check_hostname = False
        context.verify_mode = ssl.CERT_NONE
        support.get_attribute(smtplib, 'SMTP_SSL')
        with socket_helper.transient_internet(self.testServer):
            server = smtplib.SMTP_SSL(self.testServer, self.remotePort, context=context)
            server.ehlo()
            server.quit()

    def test_connect_using_sslcontext_verified(self):
        with socket_helper.transient_internet(self.testServer):
            can_verify = check_ssl_verifiy(self.testServer, self.remotePort)
            if not can_verify:
                self.skipTest("SSL certificate can't be verified")

        support.get_attribute(smtplib, 'SMTP_SSL')
        context = ssl.create_default_context()
        with socket_helper.transient_internet(self.testServer):
            server = smtplib.SMTP_SSL(self.testServer, self.remotePort, context=context)
            server.ehlo()
            server.quit()


if __name__ == "__main__":
    unittest.main()